Samuel g



@uitrit gtst-rs gettin @ff-irc.

, SAMUEL G. CAlELLr/OF QUINCY, ILLINOIS.

' Lerma Pawn: No. 68,041, and .iugm 27, 18er.

IMPROVEMENT IN ELECTRICAL APPABATggnIR PREVENTING INGBUSTA'IION 0F STEAM- ttlgt Srlgrtult rrfemt tu in tlgggijgrltni Entert mit making satt nf tlg: sani.

T0 ALL WHOM IT MAY CONCERN:

Bo it known that I, SAMUEL G. CABELL, of Quincy, in the county of Adams, and State of Illinois, have invented a new and useful Improvement in Apparatus for Preventing the Formation of Scale in Boilers, and removing such incrustation as may have been already formed at the time ot' its application; andI do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming part of this specification: in which- .Figure 1 is en elevation (partly in section) of thc apparatus as constructed with a permanently magnetized steel bar employed.

Figure 2 is a horizontal section en the line er z on tig. 1.

Figure 3 is a similar section on thc line y y.

Figure 4 is a similar section on the line z z.

Figure 5 is a sectional view, showing the method of attaching the plate G to the magnet L.

Figure 6 is an elevation of a galvanic rod partly in section, which may be substituted for the magnet represented in tig. 1.

The same letters are employed in all the tigures in the indication of identical parts.

The object of my invention is to provide means whereby to conduct o' the electricity generated in asteamboiler, for the purpose of preventing incrustation therein, by means ot' aseries of magnetized points attached t0 a' permanent magnet,V asimplo conductor. er a rodeomposed of dissimilar metals'arranged within a chamber attached to the boiler, and providedwith a stop-cock, in such manner that said action may he regulated or suspended at pleasure.

The following description will enable one skilled-in the art to make and use my apparatus:

A represents part of the shell of a cylindrical boiler, to which are attached the pipes B provided with a stopcock, B'. This pipe may be constructed with flanges, as shown in tig. 1, by which tho cylindrical chamber C may be attached to it. On the upper end of this chamber is bolted the stuiling-box D with its follower E. The bar F, of permanently magnetized steel, passes through the standing-box D, where it is surrounded and insulated by gatta-percha or other suitable non-conductor, and in thc collar E and lower part of thestutiing-box it is sustained by strips of gatta-perche er othersuitablc insulators, arranged as shown in iig. 3, the packing in the stutling-box being stoam-tight, as well as a non-conductor. About midway of the packing in the stuiiingbux the magnet'is provided with acollar secured to it, which being firmly clamped by the packing prevents. the

i steam from forcing up said magnet. This may also bc accomplished by other means which it is not necessary to describe here. Ou the lower end of the' rod F is fastened, suspended within (and not in contact with) the .chamber C, theplate G, from the lower face of which the pointed pins G project. These points areof soft iron, or other suitable material, gold plated and tipped with platinum, and being connected by means of the plate Gef the same material with 4the magnet F,bccome magnctized thereby. On the upper end of the rod isa pointed tip, I, screwed dinto the cap H, andbcaring upon and holding in place the wire K,'which communicates with the earth, by which means tho electric current received by the points G-is conveyed ott and discharged, or the ground connection may be made bypassigswire through the hole a in the upper pointed tip I. The other end of said wire communicating with the ground establishes the current, as before described. Instead of the permanently mag'netised rod F, arod composed of two dissimilarmetsls, as represented in iig. 6, so constructed and combined as to generate galvanic currents, may be substituted therefor.

Having thus described my invention; what I claim as new, and desire to secure by Letters Patent, is-

1. The external chamber C attached to the stcamsboilcr, when provided with a stop-cock to cut of or regnlate its communication therewith, for the purpose specied.

2. In combination with said chamber C, a red, F, constructed with points G, arranged within the chamber and insulated therefrom, in the manner substantial-ly and'for the purposes set forth.

53. In combination with the chamberC, a rod, F, constructed withpoints G, arranged within thc chamber, .and insulated therefrom, said rod being a simple conductor, a permanent magnet, or composed ot' two dissimilar metals, substantially as and for the purpose described.

S. G. CABELL.

Witnesses W. Mouais Smrn,

Sroser E. Samir. 

